��Ŀ䛡� Part One Making Contacts Unit 1 Cover Letters and CVs Unit 2 Inquiry Letters and Request Letters Unit 3 Invitation Letters and Thank-you Letters Unit 4 Apology Letters and Complaint Letters Part Two Describing Visuals Unit 5 Line Charts Unit 6 Bar Charts Unit 7 Pie Charts Unit 8 Tables Unit 9 Maps Unit 10 Diagrams Part Three Writing Essays Unit 11 Discussing Both Views Unit 12 Discussing Advantages and Disadvantages Unit 13 Expressing an Opinion (For) Unit 14 Expressing an Opinion(Against) Unit 15 Explaining Problems and Solutions Unit 16 Explaining Causes and Effects Answer Keys